Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a soma de To Par, quando o País é "Estados Unidos" e quando o Ano(s) Vencido é "1973"?
 ###Tabelas: CREATE TABLE made_the_cut (made_the_cut_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Country VARCHAR, Year(s) won VARCHAR, Total INT, To par INT, Finish VARCHAR) CREATE TABLE current_providers (current_providers_id AUTO_INCREMENT PRIMARY KEY, Provider VARCHAR, Years VARCHAR, Free or pay VARCHAR, Transmission VARCHAR, On demand VARCHAR) CREATE TABLE 2008_2009_table (2008_2009_table_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Played VARCHAR, Won VARCHAR, Drawn VARCHAR, Lost VARCHAR, Points for VARCHAR, Points against VARCHAR, Tries for VARCHAR, Tries against VARCHAR, Try bonus VARCHAR, Losing bonus VARCHAR, Points VARCHAR) CREATE TABLE club_world_cup_finalists_by_nation (club_world_cup_finalists_by_nation_id AUTO_INCREMENT PRIMARY KEY, Nation VARCHAR, Finalists INT, Winners INT, Runners-up INT, % won INT, Years won VARCHAR) CREATE TABLE financial_comparisons_between_top_10_banks_in_indonesia_-_2006 (financial_comparisons_between_top_10_banks_in_indonesia_-_2006_id AUTO_INCREMENT PRIMARY KEY, Bank VARCHAR, Asset INT, Loans INT, NPL Net VARCHAR, Deposits INT, Net Interest Income INT, Non-Interest Income INT, Net Profit INT, No. of Employees VARCHAR, No. of Branches/Offices INT, No. of ATMs VARCHAR)  
SELECT SUM To par FROM made_the_cut WHERE Country = united states AND Year(s) won = 1973